Beveled interengaging impellers supercharger or blower



July 5, 1949. J. w. F. HOLL 2,475,096

BEVELED INTERENGAGING IMPELLERS I \SUPERCHARGER OR BLOWER Filed Oct. 9,1945' 3'Sheots-Sheet 1 FIGURE I 7 a Q a a 5 FIGURE 4 FIGURE 3 NfoR JamesHall July 5, 1949. J w F HOLL 2,475,096

BEVELED m'maianekeme IMPELLERS SUPERCHARGER OR BLOWER 3 Sheets-Sheet 2Filed Oct. 9, 1945 I INVENTOR FIGURE 7 James \MFl-loll.

y 5, 1949- J. w. F. HOLL 2,475,096

BEVBLED INTERENGAGING IMPELLERS SUPERCHARGER OR BLOWER Filed Oct. 9,1945 s SheQtS -Sheet s FIGURE 8 FIGURE 9 FIGURE IO INVENTOR 'Jdmas- W FH011 Patented July 5, 1949 BEVELED INTERENGAGING IMPELLEBS SUPERCHARGEROR BLOWER James W. F. H011, Los Angeles, Calif.

Application October 9, 1945, Serial No. 621,333

4 Claims. 1

This invention relates to a supercharger or blower whereby gases areforced under pressure in large volume out of the blower.

An object of my invention is to provide a supercharger or blower of thedisc and blade type, and in which the blades and the disc rotate onoblique axes; the disc being so mounted that it will seal against a sidewall of the housing between the intake and outlet ports.

Another object of my invention is to provide a novel supercharger orblower, the housing of which is formed in two similar parts; said partsbeing bolted together on approximately the center line of the apparatus.

Another object of my invention is to provide a novel supercharger orblower of the character stated in which the two obliquely mounted shaftsare journalled in adjustable bearings so that the rotating disc andblades can be held within close tolerances, relative to the surfaceswith which they cooperate.

Still another object is to provide a novel supercharger or blower of thecharacter stated, which can be used as a two-stage apparatus, ifdesired.

A feature of my invention resides in the smooth and contoured path forthe flow of air, or other gases, moving through the blower.

Other objects, advantages and features of invention may appear from theaccompanying drawing, the subjoined detailed description and theappended claims.

Figure 1 is a vertical sectional view of my supercharger or blower.

Figure 2 is a side elevation of the disc and blades in assembledposition.

Figure 3 is a side elevation of the blade assembly, the upper portion ofwhich being shown in section.

Figure 4 is an end view of the blade assembly.

Figure 5 is a side elevation of the housing, the upper part being brokenaway to show interior structure.

Figure 6 is a fragmentary sectional view taken on line 6-6 of Figure 5.

Figure '7 is a view similar to Figure 5, but with the lower part of thehousing being broken away to show interior structure.

Figure 8 is a side elevation of the disc, this view showing the outsideface thereof.

Figure 9 is an end view of the disc.

Figure 10 is a side elevation of the disc showing the inside face.

Referring more particularly to the drawing, my invention includes ahousing I, this housing being formed as a segment of a sphere andconsisting of two similar halves. These two halves 2 and 3 are flangedand bolted together as shown at l. A drive shaft 5 extends into thehousing and is journalled in a bearing or bearings 6; this mounting ispreferably adjustable longitudinally of the bearing 6, in a manner usualfor roller or ball bearings so that the interior rotating parts can becarefully adjusted and with very small tolerances between the contactingsurfaces.

A drive shaft I is mounted oblique to the shaft 5 and is journalled inthe bearing 8, which again is preferably adjustable in the usual mannerand similar to the bearing 6 for the purpose of accurately mounting theparts within the housing. The bearings 6 and 8 are preferably of theantifriction type, this being the type usually employed in adjustablebearings.

A universal joint 9 couples the shaft 5 to the shaft 1 so that both ofthese shafts are simultaneously rotated. A disc Ill is formed with acentral hub I I; this hub being substantially semispherical. The hub issuitably mounted on the shaft 1, that is, it is fixedly attached theretoso that the shaft, the hub, and the disc will rotate together.

The disc and the hub may be formed as one integral part, although thisis not absolutely necessary.

A pair of blades I2-I2 extend from a hub I3, which is spherical in shapeand is adapted to fit closely within the hub II and with closetolerances. The hub I3 is suitably mounted on the shaft 5 so that theshaft, hub and blades rotate together.

The disc I0 is provided with two diametrically opposite slots I4 and I5,into which the blades I'2-I2 extend. The hub I I is provided with eggorelliptical-shaped openings l6 and I1, which extend into the slots I4 andI5, respectively. The purpose of these openings is to receive the lowerpart of the blades I2, and this lower blade face I8 will engage the wallof one of these openings, and will follow this ellipticalor egg-shapedpath, as the disc and blades rotate.

It will be evident that during the rotation of the disc and blades, therelative position of the disc and blades will vary, and this variationin movement is the reason for the eggor ellipticalshaped cutouts I6 andI1. Since the blade follows the wall of the cutout I6 or IT, it willalso act as a seal at this point. The slots I4 and I5 are so formed thatthe blades I2I2, fitting therein, will be sealed off by the face of theslots, that is the face of the slot might be chamfered as shown inFigure 9, due to the oblique mounting of the disc I within the housing.It will be evident that the outer and inner faces of the disc willclosely follow a fiat face of the housing indicated at l9. Thiscontacting point of the disc lies between the inlet 20 and the exhaust2|, thus sealing the inlet from the exhaust, This arrangement is bestshown in Figures 1 and 6. The exhaust and inlet combination isduplicated on the lower half of thelhousing, and on the opposite side asshown'in Figure 1.

The second exhaust 22, being shown in this figure, adjacent inlet 23 isalso provided. In Figure 6 the direction of rotation of thedisc-andblades is shown by the arrow.

If it is desired to use the supercharger or blower as a two-stagedevice, the exhaust'from the bottom can be extended to the inlettat thetop. Obviously any combination of upper and lower portage can be used.While I have mentionedithe-use of air or other gases, and for thispurpose have stressed the fact that the adjacent and moving surfaces:must be closely fit, lit is :possible to use my-device withliquids,.and:in-this instance there can be a substantially'metaltormetal contact between the various adjacent surfaces.

Having described-my invention, I claim':

1. In a supercharger'or blower, a rotatable radially bladed element,said element including a spherical hub, a rotatableslottedqdiscincludinga semi spherical hub, the :hub ;of the bladedelement fitting within the h'llbzOf the disc, the hub of'the-dischaving'a curved wallcutout extending fromtheslots in saiddisc,.anedgeofthe blade following the curved wall'of the cutout as the disc andbladesrotate, a-casing, said casing having inlet and. discharge ports ithereinarranged lin'rthe side wall thereof said bladed aelementand -.discbeing'adapted torotateon oblique axes -in the casing.

2. In a-supercharger or b1ower,-:arotatableradially bladed element, saidelement including .a spherical hub, a rotatable slotted disc including asemi-spherical hub, 'thehubof the bladed element fittingwithin the hubof the disc, the vhub of the disc having a curved wall cutout extendingfrom the slots in said disc, an :edgeof theblade following the. curved,wall of the. cutout. as thedisc and blades rotate, a casing, saidcasing having inlet anddischarge ports thereintarrangedin the side:wallthereof, said bladed elementand disc being adapted to .rotate0l1.0b1i 1118 9.-X6S in .the casing, saiddisc sealing-withitherside wallof the casing between the inlet and discharge ports.

3. In a supercharger or blower, a rotatableradially bladed element,saidelementlincluding a 4 spherical hub, a rotatable slotted discincluding a semi-spherical hub, the hub of the bladed element fittingwithin the hub of the disc, the hub of the disc having a curved wallcutout extending from the slots in said disc, an edge of the bladefollowing the curved wall of the cutout as the disc and blades rotate, acasing, said casing having inlet and discharge ports therein arranged inthe :side wall :thereof, said bladed element and disc beingadaptedtorotate on oblique'axes in the casing, said disc sealing withthe side wall of the casing between the inlet and discharge ports, theinlet and discharge ports being arranged in the side of the'casing andon opposite sides thereof, there being an inlet and discharge portadjacent "the upperand'lower parts of the casing.

4. A supercharger or blower comprising a rotatable radiallyblade'delement, a shaft on which the bladedelement is mounted, an adjustablebearing in which said shaft is journalled, a rotatable slotted:discadapted to receive the blades of said bladed element Within itsslots, a second shaft on which said disc'is-mounted, an adjustablebearing in which the second shaft is journalled, said shaftsbeingobliquelypositioned, a universal joint connecting said shafts,.ahousing havinga spherical-.1ike chamber within which the bladed elementandthe disc areadapted to rotate onoblique axes, intake andoutletportsinsaidcasing, a spherical hub .on the bladed element, asemi-spherical hub on theslotted discthe hub of the bladed elementfittingwithinlthe hub of the disc, the hub of the disc having acurvedwall-cutout-extending from the slots in said disc, an edge of the bladefollowing the curved wall-of the cutout as 'the-disc-and bladesrotatc.

JAMES W. F. HOLL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 12;022 Gray Dec. 5, 1854 273,137,iI-Iunter Mar. 13, 1883 2,101,051 .Cuny ;Dec. 7, .1937 2,101,428 aCuny;Dec. 7, 1937 2,242,058 Cuny u--. May 13, 1941 2,380,886 Waldie July 31,1945 FOREIGN PATENTS Number Country Date 283,790 Great Britain Jan. 19,1928 462,054 Great Britain Mar. 1, 1937

